a- Morpheme a- Type prefix Denotation negating prefix Etymology Ancient Greek a-, an- Evidence acyclic, agnostic, alethic, amoral, asexual, asymmetry, atheism, atypical See Also an- Homographs A, -a, a-, -a, a-, -a, a-, -a, -a, -a, -a, -a, -a Share on FacebookTweetSave